EP3087822B1 - Haymaking machine - Google Patents

Haymaking machine Download PDF

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Publication number
EP3087822B1
EP3087822B1 EP16000889.2A EP16000889A EP3087822B1 EP 3087822 B1 EP3087822 B1 EP 3087822B1 EP 16000889 A EP16000889 A EP 16000889A EP 3087822 B1 EP3087822 B1 EP 3087822B1
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EP
European Patent Office
Prior art keywords
spring
contour
ground
tine
haymaking machine
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EP16000889.2A
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German (de)
French (fr)
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EP3087822A1 (en
Inventor
Andreas Afting
Erik Helper
Karl Leifeling
Mathias Weber
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Maschinenfabrik Bernard Krone GmbH and Co KG
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Maschinenfabrik Bernard Krone GmbH and Co KG
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Priority to SI201630045T priority Critical patent/SI3087822T1/en
Priority to PL16000889T priority patent/PL3087822T3/en
Publication of EP3087822A1 publication Critical patent/EP3087822A1/en
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Publication of EP3087822B1 publication Critical patent/EP3087822B1/en
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D80/00—Parts or details of, or accessories for, haymakers
    • A01D80/02—Tines; Attachment of tines
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D78/00—Haymakers with tines moving with respect to the machine
    • A01D78/08—Haymakers with tines moving with respect to the machine with tine-carrying rotary heads or wheels
    • A01D78/10—Haymakers with tines moving with respect to the machine with tine-carrying rotary heads or wheels the tines rotating about a substantially vertical axis
    • A01D78/1064—Arrangements of tines

Definitions

  • the invention relates to a haymaking machine for tedding and turning of agricultural stalk or sheet material according to the preamble of claim 1.
  • Such haymaking machines are known from the prior art in various embodiments and serve to the drying process lying on a field or meadow surface, agricultural To support or accelerate stalk and leaf material.
  • the grading or turning of agricultural stalk or sheet material is carried out by rotating circumferentially driven tedder, which absorb with the soil extending spring tines on the front with respect to the direction of travel of the tedder the crop from the ground and it on the back of the tedder back on the Put down soil.
  • the moist underside of the crop reaches at least partially upwards and can dry faster.
  • the quality of such a tedding or turning activity therefore depends largely on how well the recording process of the crop from the ground through the spring tines of the tedder and the subsequent discharge process is carried back to the ground.
  • the picking process of the crop from the soil is thereby given to what extent with the crop and soil particles are included and thus the pollution of the crop is affected.
  • the tedding tools are equipped with extending to the ground tine elements, wherein the ground facing ends of the two tine parts of the tine elements are hook-shaped bent in the direction of rotation. Furthermore, it is disclosed here that the ends of the two tine parts of the tine elements facing the ground are attached to the tine arms in advance of their attachment point to the tine arms of the tedder gyro. This results in the stress of the resilient zinc elements a plunge into the ground. The risk of contamination of the crop when picking up the crop from the ground thus increases significantly.
  • tine elements of the tine elements are substantially rectilinear, so that a reliable guidance of the crop during rotation of the tine elements is not given.
  • Significant contamination of the tent gyroscope by Ernteguthalme, which settle in the helical spring-shaped winding points of the tine elements is the result.
  • the DE 69 08 109 U shows and describes a rake body for a haymaking machine for the lateral collapse of lying on the ground crop, wherein the rake body is formed from approximately radially arranged tine carriers, at which at their free ends spring tines are mounted.
  • the spring tines extend from the free ends of the tine carrier down to the ground and thus form a driver surface for the lying on the ground crop.
  • the object of the invention is therefore to provide a haymaking machine for tedding and turning agricultural stalk and leaf material to be covered, in which the defects listed are avoided by the fact that the conveying process of the tines is improved by optimizing the tine shape.
  • a haymaking machine for tedding and turning agricultural stalk or sheet material with at least two, arranged on a in the working and operating position substantially aligned transversely to the direction of travel and machine direction machine beams arranged tedder gyroscopes, which is one in the working and Operating position at a predetermined angle to the vertical in the direction of travel and working inclined axis driven circumferentially and provided with a plurality of at least approximately radially aligned tine arms, the outer ends of the tine arms are equipped with spring tines and each spring tines from one, the outer end of Tine arms spatially associated, resilient mounting portion and from a processing the agricultural stalk or leaf good serving, two elongated, extending in the working and operating position of the tedder to the ground extending spring rod elements processing section consists, the two elongated spring rod elements in a view of the spring tines, in the spring tines in a vertical projection plane in a radial is shown in a direction aligned with the tenting g
  • the haymaking machine according to the invention is characterized by spring tines on the tent gyros, in which elongated designed spring rod elements are provided with a curved contour as a processing section for the crop extending in a working and operating position of the tedder from the tine arms to the ground.
  • both elongate spring rod elements of a spring tine have an at least approximately identical shape. This means that the spring prongs are formed starting from a fixing portion for attachment to the outer ends of the tine arms of a Zett Vietnameseel of elongated spring rod elements, a concave and in the circumferential direction of the Having spring tines facing contact surface with the crop.
  • the ends facing the ground of the elongated spring rod elements are aligned and arranged in the working and operating position such that when viewing a spring tine in a vertical projection plane with a radially directed towards the tenting gyroscope viewing direction, the lower end of an elongated spring rod element at an intersection a leading through a center of the cross-sectional area of the tine arms, vertical reference line with the ground gets along or is arranged downstream of this intersection with respect to the direction of rotation of the spring tines.
  • the concave, pointing in the direction of rotation of the spring tines contact surface of the arcuate contour of the elongated spring rod elements provides a reliable guidance of the crop during rotation of the tedder, so that thereby a high slipping of the crop is safely avoided up to the area of the attachment portion of the tines.
  • the risk of contamination of the tedder, in particular by clamping of individual Ernteguthalmen or Erntegutbündeln in the field of attachment sections of the tines on the tedder is thus significantly reduced.
  • the elongated spring rod elements have a design in which the arcuate contour with the vertical reference line through the center of the cross-sectional area of a tine arm in its contour portion facing the ground includes an angle ⁇ , which is in a range of 3 ° to 45 ° and preferably assumes a value of 10 ° to 30 °.
  • a corresponding angle ⁇ in the contour section facing the fastening section of the spring prongs preferably lies in a region above 90 ° and preferably moves between 135 ° and 170 °.
  • both the contour section facing the ground and the contour section facing the fastening section of the spring tines are formed as a linearly shaped, geometric element, while the third contour section connecting these two contour sections is formed as a geometric curved element with a radius-shaped curvature.
  • This embodiment requires in manufacture only a small design effort and thus ensures a cost-effective production of haymaking machine according to the invention.
  • the elongated spring rod elements in conjunction with the directed in the direction of rotation of the spring tines, arcuate contour also have a respect to the direction of rotation of the spring tines radially outward shaping. This radially outwardly directed formation superimposed on the directed in the direction of rotation of the spring tines, arcuate contour.
  • Fig. 1 is a heu naturalsmaschine 1 attachable to a three-point lifting device of an agricultural tractor or the like.
  • Towing and driving machine attachable for cropping and turning of agricultural stalk or leaf material closer, in which aligned in a working and operating position transverse to the driving and working direction F.
  • Machine beam 2 paired cooperating Zett Vietnameseel 3 are arranged.
  • the tedder gyros 3 are aligned so that they are driven in rotation around a, inclined at a predetermined angle to the vertical axis can and with the help of spring tines 4, which extend from the tenting gyros 3 to the ground, pick up the crop on the front of the provided with a plurality of teddles 3 machine beam 2 from the ground and put on the back again on the ground.
  • a running and support wheel 5 is mounted below each Zett Vietnameseels 3.
  • the invention is by no means limited to a haymaking machine in three-point hitching.
  • the invention may also be based on a drawn haymaking machine.
  • Fig. 2 goes out a tedder 3, which is provided with at least approximately radially aligned and outwardly extending beyond the outer edge of the tedder out tine arms 6. At the outer ends of the tine arms 6, these are provided with spring tines 4, which extend for the tedding and turning process close to the ground zoom.
  • the tenting gyroscope 3 is shown in the working and operating position, in which it carries out the tedding and turning operation in a circulating manner about an axis inclined at a predetermined angle to the vertical in the direction of circulation U.
  • the spring tines 4 consist of a mounting portion 7 and a processing section 8 for processing the agricultural crop.
  • the illustrated embodiment includes two helical spring-shaped winding parts 9, between which a fastening screw 10 for fixing the spring tines 4 at the outer ends of the tine arms 6 of each tedder 3 is arranged.
  • the attachment of the spring tines 4 on the tine arms 6 can be made adjustable so that the spring tines 4 are adjustable with respect to their orientation to the ground. In the illustrated embodiment, this means that the spring tines 4 at the ends of the tine arms 6 are adjustable in rotation or adjustable by these.
  • elongated spring rod elements 11 are formed with at least approximately the same shape.
  • these elongated spring rod elements 11 have an arcuate contour 12, which contains a concave contact surface for the crop that is concave and points in the direction of rotation U of the spring prongs 4.
  • the two elongated spring rod elements 11 with their arcuate contour 12 thus form an optimal guide for the picked up from the ground crop, as this slips immediately after recording from the ground to the concave, arcuate contour 12 of the elongated spring rod elements and remains there until the Crop is returned to the ground after the tedding or turning process at the rear of the tedder.
  • contamination of the helical spring-shaped winding parts 9 of the spring tines 4 is effectively avoided by individual stalks.
  • elongated spring rod elements 11 with the arcuate contour 12 is in particular from the Fig. 3 in which the spring tines 4 is shown in a vertical projection plane with a radially on the circumferentially U driven spring tines 4. It is clear from this illustration that an end of the elongated spring rod elements 12 facing the ground terminates at an intersection point 13 or is arranged downstream of it in the circumferential direction U. This intersection 13 results from a, through a center 14 of a cross-sectional surface 15 of the tine arm 6 leading vertical reference line 16 with a level of the ground representing horizontal reference line 17.
  • the ground-facing end of the elongated spring rod elements 12 regardless of the respective stress through the crop to be picked up from the ground is oriented so that the distance between the ground and the end of the elongated spring bar elements facing the ground can not be reduced under stress. A piercing of the spring tines 4 in the ground is thus effectively avoided.
  • the arcuate contour 12, as well as Fig. 3 becomes clear, consist of several contour sections 18,19,20, based on the pointing in the direction of rotation U, concave contact surface. These contour sections 18, 19, 20 can be based on a different geometrical shape, so that, after appropriate combination, a large number of design possibilities of the arcuate contour 12 are offered.
  • Fig. 3 It can be seen that the contour portion 18 of the elongate spring rod members 11 at the end facing the ground with the vertical reference line 16 form an angle ⁇ , which can assume values between 3 ° and 45 °.
  • the angle ⁇ moves between 10 ° and 30 °.
  • an angle ⁇ is formed whose value is in a range above 90 °.
  • a value of 135 ° to 170 ° is sought here.
  • the here preferably designed as a straight contour sections 18, 19 are connected to each other via a further contour portion 20, which is here formed as a geometric arc element with radius-shaped curvature, wherein the radius can be in a range of 100 mm to 400 mm.
  • FIG. 4 show, wherein the elongated spring rod elements 11 in conjunction with the directed in the direction of rotation of the spring tines 4, arcuate contour 12 also have a respect to the direction of rotation U of the spring tines 4 radially outwardly directed formation. This radially outwardly directed formation is superimposed by the arcuate contour 12 directed in the direction of rotation U of the spring tines 4.
  • a contour section 21 facing the ground is shaped as a geometric arch element with a radius-shaped curvature, while the contour section 22 facing the tine arm 6 is rectilinear.

Description

Die Erfindung betrifft eine Heuwerbungsmaschine zum Zetten und Wenden von landwirtschaftlichem Halm- oder Blattgut nach dem Oberbegriff des Patentanspruches 1. Derartige Heuwerbungsmaschinen sind aus dem Stand der Technik in verschiedenen Ausführungsformen bekannt und dienen dazu, den Trockungsvorgang von auf einer Feld- oder Wiesenfläche liegendem, landwirtschaftlichen Halm- und Blattgut zu unterstützen bzw. zu beschleunigen. Das Zetten oder Wenden von landwirtschaftlichem Halm- oder Blattgut erfolgt dabei durch rotierend umlaufend angetriebene Zettkreisel, die mit sich zum Erdboden erstreckenden Federzinken an der in Bezug zur Fahrtrichtung vorderen Seite der Zettkreisel das Erntegut vom Erdboden aufnehmen und es an der Hinterseite der Zettkreisel wieder auf dem Erdboden ablegen. Die feuchte Unterseite des Erntegutes gelangt dadurch zumindest teilweise nach oben und kann schneller abtrocknen. Die Qualität einer solchen Zett- oder Wendetätigkeit hängt daher maßgeblich davon ab, wie gut der Aufnahmevorgang des Erntegutes vom Erdboden durch die Federzinken der Zettkreisel sowie der anschließende Abgabevorgang zurück auf den Erdboden ausgeführt wird. Insbesondere beim Aufnahmevorgang des Erntegutes vom Erdboden wird dabei vorgegeben, in welchem Maße mit dem Erntegut auch Erdpartikel mit aufgenommen werden und somit die Verschmutzung des Erntegutes beeinflusst wird.The invention relates to a haymaking machine for tedding and turning of agricultural stalk or sheet material according to the preamble of claim 1. Such haymaking machines are known from the prior art in various embodiments and serve to the drying process lying on a field or meadow surface, agricultural To support or accelerate stalk and leaf material. The grading or turning of agricultural stalk or sheet material is carried out by rotating circumferentially driven tedder, which absorb with the soil extending spring tines on the front with respect to the direction of travel of the tedder the crop from the ground and it on the back of the tedder back on the Put down soil. The moist underside of the crop reaches at least partially upwards and can dry faster. The quality of such a tedding or turning activity therefore depends largely on how well the recording process of the crop from the ground through the spring tines of the tedder and the subsequent discharge process is carried back to the ground. In particular, during the picking process of the crop from the soil is thereby given to what extent with the crop and soil particles are included and thus the pollution of the crop is affected.

Aus der DE 299 12 957 U1 ist eine Heuwerbungsmaschine zum Zetten und Wenden von am Boden liegendem Erntegut bekannt geworden, deren Zettwerkzeuge mit sich zum Boden hin erstreckenden Zinkenelementen ausgerüstet sind, wobei die dem Erdboden zugewandten Enden der beiden Zinkenteile der Zinkenelemente hakenförmig in Umlaufrichtung abgebogen sind. Weiterhin wird hier offenbart, dass die dem Erdboden zugewandten Enden der beiden Zinkenteile der Zinkenelemente gegenüber ihrer Anbringungsstelle an den Zinkenarmen der Zettkreisel vorlaufend an den Zinkenarmen angebracht sind. Dadurch ergibt sich bei der Beanspruchung der federnd nachgiebigen Zinkenelemente ein Einstechen in den Erdboden. Die Verschmutzungsgefahr des Erntegutes bei der Aufnahme des Erntegutes vom Erdboden steigt damit deutlich an. Ein weiterer Mangel der offenbarten Zinkenelemente ist darin zu sehen, dass die Zinkenteile der Zinkenelemente, in Umlaufrichtung gesehen, Im Wesentlichen geradlinig ausgebildet sind, so dass eine zuverlässige Führung des Erntegutes während des rotierenden Umlaufes der Zinkenelemente nicht gegeben ist. Eine deutliche Verschmutzung der Zettkreisel durch Ernteguthalme, die sich in den schraubenfederförmigen Windungstellen der Zinkenelemente festsetzen, ist die Folge.From the DE 299 12 957 U1 is a haymaking machine for tedding and turning known from lying on the ground crop, the tedding tools are equipped with extending to the ground tine elements, wherein the ground facing ends of the two tine parts of the tine elements are hook-shaped bent in the direction of rotation. Furthermore, it is disclosed here that the ends of the two tine parts of the tine elements facing the ground are attached to the tine arms in advance of their attachment point to the tine arms of the tedder gyro. This results in the stress of the resilient zinc elements a plunge into the ground. The risk of contamination of the crop when picking up the crop from the ground thus increases significantly. Another shortcoming of the disclosed tine elements is the fact that the tine elements of the tine elements, seen in the direction of rotation, are substantially rectilinear, so that a reliable guidance of the crop during rotation of the tine elements is not given. Significant contamination of the tent gyroscope by Ernteguthalme, which settle in the helical spring-shaped winding points of the tine elements is the result.

Die DE 69 08 109 U zeigt und beschreibt einen Rechkörper für eine Heuwerbungsmaschine zum seitlichen Zusammenrechen von auf dem Boden liegendem Erntegut, wobei der Rechkörper aus etwa radial angeordneten Zinkenträgern gebildet ist, an denen an ihren freien Enden Federzinken angebracht sind. Bei der Recharbeit erstrecken sich die Federzinken ausgehend von den freien Enden der Zinkenträger nach unten zum Erdboden und bilden so eine Mitnehmerfläche für das auf dem Erdboden liegende Erntegut. Dadurch dass die Federzinken an ihren Zinkenspitzen einen Winkel mit dem Erdboden bilden, der größer als 90 ° ist, können diese Federzinken die Anforderungen an eine vollständige Aufnahme des Erntegutes vom Erdboden zwar erfüllen, eine gleichmäßige und ungestörte Abgabe des Erntegutes ist mit dieser Zinkenform dagegen nicht erreichbar.The DE 69 08 109 U shows and describes a rake body for a haymaking machine for the lateral collapse of lying on the ground crop, wherein the rake body is formed from approximately radially arranged tine carriers, at which at their free ends spring tines are mounted. In the raking, the spring tines extend from the free ends of the tine carrier down to the ground and thus form a driver surface for the lying on the ground crop. The fact that the spring tines form an angle with the soil at their tips, which is greater than 90 °, these tines can meet the requirements for a complete uptake of the crop from the ground, a uniform and undisturbed delivery of the crop is not with this tine shape reachable.

Mit der DE 11 61 449 B wird ein, um eine etwa vertikale Achse umlaufendes, angetriebenes Rechrad zur Verwendung an Heuwerbungsmaschinen vorgestellt. Auch hier wird wiederum darauf abgestellt, dass speziell gestaltete Federzinken sowohl zum Zusammenrechen als auch für die Zett- und Wendearbelt einsetzbar sind. Dazu sind die Federzinken derart geknickt gestaltet, dass die zum Erdboden zeigenden Zinkenspitzen in radialer Richtung nach außen gerichtet sind. Aus der Praxis ist es in diesem Zusammenhang allerdings bekannt, dass Insbesondere im Bereich des Knicks die Ernteguthalme dazu neigen, dass sie sich um den Zinkenschaft wickeln und damit die gleichmäßige Abgabe beim Zetten und Wenden deutlich erschweren bzw. unmöglich maschen.With the DE 11 61 449 B For example, a driven rake wheel revolving around an approximately vertical axis for use on haymaking machines is presented. Again, it is again made to ensure that specially designed spring tines can be used both for collapsing and for the tedding and Wendearbelt. For this purpose, the spring tines are designed bent such that the pointing to the ground tine tips are directed in the radial direction to the outside. From practice, it is known in this context, however, that especially in the field of Knicks the Ernteguthalme tend to wrap around the tine shaft and thus make the uniform delivery during tedding and turning significantly difficult or impossible mesh.

Aufgabe der Erfindung ist es daher, eine Heuwerbungsmaschine zum Zetten und Wenden von landwirtschaftlichem Halm- und Blattgut berelt zu stellen, bei der die aufgeführten Mängel dadurch vermieden werden, dass der Fördervorgang der Federzinken durch eine Optimierung der Zinkenform verbessert ist.The object of the invention is therefore to provide a haymaking machine for tedding and turning agricultural stalk and leaf material to be covered, in which the defects listed are avoided by the fact that the conveying process of the tines is improved by optimizing the tine shape.

Diese Aufgabe wird erfindungsgemäß durch eine Heuwerbungsmaschine mit den kennzeichnenden Merkmalen des Patentanspruchs 1 gelöst, wobei die Merkmale der weiteren Patentansprüche die Lösung in vorteilhafter Weise weiterentwickeln.This object is achieved by a haymaking machine with the characterizing features of claim 1, wherein the features of the other claims further develop the solution in an advantageous manner.

Gemäß der Erfindung wird eine Heuwerbungsmaschine zum Zetten und Wenden von landwirtschaftlichem Halm- oder Blattgut mit zumindest zwei, an einem in der Arbeits- und Betriebsstellung im Wesentlichen quer zur Fahrt- und Arbeitsrichtung ausgerichteten Maschinenbalken angeordneten Zettkreiseln vorgeschlagen, welche um eine in der Arbeits- und Betriebsstellung unter einem vorbestimmten Winkel zur Vertikalen in Fahrt- und Arbeitsrichtung geneigten Achse umlaufend angetrieben und mit einer Mehrzahl von zumindest in etwa radial ausgerichteten Zinkenarmen versehen sind, wobei die äußeren Enden der Zinkenarme mit Federzinken bestückt sind und jeder Federzinken aus einem, dem äußeren Ende der Zinkenarme räumlich zugeordneten, federnd nachgiebigen Befestigungsabschnitt sowie aus einem der Bearbeitung des landwirtschaftlichen Halm- oder Blattgutes dienenden, zwei längliche, sich in der Arbeits- und Betriebsstellung der Zettkreisel zum Erdboden erstreckende Federstangenelemente aufweisenden Bearbeitungsabschnitt besteht, wobei die beiden länglichen Federstangenelemente bei einer Betrachtung der Federzinken, in der der Federzinken in einer vertikalen Projektionsebene in einer radial auf den Zettkreisel ausgerichteten Blickrichtung gezeigt ist, eine bogenförmige Kontur mit zumindest annähernd gleicher Formgebung aufweisen, wobei ein dem Erdboden zugewandtes Ende der länglichen Federstangenelemente in Bezug zur Umlaufrichtung der Federzinken und einer durch einen Mittelpunkt der Querschnittsfläche des Zinkenarmes führenden, vertikalen Bezugslinie mit einem Schnittpunkt dieser Bezugslinie mit dem Erdboden zusammenfällt oder diesem nachgeordnet ist und wobei die bogenförmige Kontur der länglichen Federstangenelemente in radialer Ausrichtung des umlaufenden Federzinkens aus zwei geometrisch gestalteten Konturabschnitten besteht, wobei der dem Erdboden zugewandte Konturabschnitt als Bogenelement mit radiusförmiger Krümmung und der dem federnd nachgiebigen Befestigungsabschnitt des Federzinkens zugewandte Konturabschnitt als geradlinig ausgebildetes Element ausgeführt ist.According to the invention, a haymaking machine for tedding and turning agricultural stalk or sheet material with at least two, arranged on a in the working and operating position substantially aligned transversely to the direction of travel and machine direction machine beams arranged tedder gyroscopes, which is one in the working and Operating position at a predetermined angle to the vertical in the direction of travel and working inclined axis driven circumferentially and provided with a plurality of at least approximately radially aligned tine arms, the outer ends of the tine arms are equipped with spring tines and each spring tines from one, the outer end of Tine arms spatially associated, resilient mounting portion and from a processing the agricultural stalk or leaf good serving, two elongated, extending in the working and operating position of the tedder to the ground extending spring rod elements processing section consists, the two elongated spring rod elements in a view of the spring tines, in the spring tines in a vertical projection plane in a radial is shown in a direction aligned with the tenting gyroscope, having an arcuate contour with at least approximately the same shape, wherein a ground-facing end of the elongated spring rod elements with respect to the direction of rotation of the spring prongs and a leading through a center of the cross-sectional area of the tine arm, vertical reference line with an intersection of this Reference line coincides with the ground or is arranged downstream of this and wherein the arcuate contour of the elongated spring rod elements in the radial alignment of the circumferential spring tine of two geometrically shaped contour sections, wherein the contour facing the ground contour portion is designed as a curved element with radius-shaped curvature and the resiliently fitting portion of the spring tine facing contour portion as a rectilinear design element.

Die erfindungsgemäße Heuwerbungsmaschine zeichnet sich durch Federzinken an den Zettkreiseln aus, bei denen als Bearbeitungsabschnitt für das Erntegut länglich gestaltete Federstangenelemente mit einer bogenförmigen Kontur vorgesehen sind, die sich in einer Arbeits- und Betriebsstellung der Zettkreisel von den Zinkenarmen bis zum Erdboden erstrecken. In vorteilhafter Weise haben beide länglichen Federstangenelemente eines Federzinkens dabei eine zumindest annähernd gleiche Formgebung. Das bedeutet, dass die Federzinken ausgehend von einem Befestigungsabschnitt zur Befestigung an den äußeren Enden der Zinkenarme eines Zettkreisel aus länglichen Federstangenelementen gebildet sind, die eine konkave und in Umlaufrichtung der Federzinken zeigende Kontaktfläche mit dem Erntegut aufweisen. Erfindungsgemäß sind dabei die dem Erdboden zugewandten Enden der länglichen Federstangenelemente in der Arbeits- und Betriebsstellung derart ausgerichtet bzw. angeordnet, dass bei einer Betrachtung eines Federzinkens in einer vertikalen Projektionsebene mit einer radial auf den Zettkreisel gerichteten Blickrichtung das untere Ende eines länglichen Federstangenelementes auf einem Schnittpunkt einer durch einen Mittelpunkt der Querschnittsfläche der Zinkenarme führenden, vertikalen Bezugslinie mit den Erdboden auskommt oder diesem Schnittpunkt bezüglich der Umlaufrichtung der Federzinken nachgeordnet ist. Durch diese Anordnung des unteren Endes der länglichen Federstangenelemente bei der Gestaltung einer vorteilhaften Zinkenform ist sichergestellt, dass der Abstand des unteren Endes der länglichen Federstangenelemente zum Erdboden auch bei zunehmender Beanspruchung durch größere, zu bewegende Erntegutmengen niemals kleiner wird. Desweiteren ergibt sich aus dieser vorteilhaften Gestaltung der länglichen Federstangenelemente, dass durch die in Umlaufrichtung der Federzinken zeigende, konkave Kontaktfläche der bogenförmigen Kontur der länglichen Federstangenelemente mit dem Erntegut immer optimale Aufnahmeeigenschaften der Federzinken vorliegen. Insbesondere durch die Gestaltung des dem Erdboden zugewandten Konturabschnitts der länglichen Federstangenelemente, der einen Winkel α mit der vertikalen Bezugslinie einschließt, wird das aufgenommene Erntegut sofort nach oben geführt und verlässt somit sehr schnell den Erdbodenbereich, wodurch eine weitere Futterverschmutzung vermieden wird. Zudem erbringt die konkave, in Umlaufrichtung der Federzinken zeigende Kontaktfläche der bogenförmigen Kontur der länglichen Federstangenelemente eine zuverlässige Führung des Erntegutes beim rotierenden Umlauf der Zettkreisel, so dass damit ein Hochrutschen des Erntegutes bis in den Bereich des Befestigungsabschnittes der Federzinken sicher vermieden wird. Die Verschmutzungsgefahr der Zettkreisel, insbesondere durch Festklemmen von einzelnen Ernteguthalmen oder Erntegutbündeln im Bereich der Befestigungsabschnitte der Federzinken an den Zettkreisel ist damit deutlich herabgesetzt.The haymaking machine according to the invention is characterized by spring tines on the tent gyros, in which elongated designed spring rod elements are provided with a curved contour as a processing section for the crop extending in a working and operating position of the tedder from the tine arms to the ground. In an advantageous manner, both elongate spring rod elements of a spring tine have an at least approximately identical shape. This means that the spring prongs are formed starting from a fixing portion for attachment to the outer ends of the tine arms of a Zettkreisel of elongated spring rod elements, a concave and in the circumferential direction of the Having spring tines facing contact surface with the crop. According to the invention, the ends facing the ground of the elongated spring rod elements are aligned and arranged in the working and operating position such that when viewing a spring tine in a vertical projection plane with a radially directed towards the tenting gyroscope viewing direction, the lower end of an elongated spring rod element at an intersection a leading through a center of the cross-sectional area of the tine arms, vertical reference line with the ground gets along or is arranged downstream of this intersection with respect to the direction of rotation of the spring tines. By this arrangement of the lower end of the elongated spring rod elements in the design of a favorable tine shape ensures that the distance between the lower end of the elongated spring rod elements to the ground is never smaller with increasing load by larger, to be moved Erntegutmengen. Furthermore, it follows from this advantageous design of the elongated spring rod elements that present by the pointing in the direction of rotation of the spring tines, concave contact surface of the arcuate contour of the elongated spring rod elements with the crop always optimal absorption properties of the tines. In particular, by the design of the ground-facing contour portion of the elongated spring rod elements, which includes an angle α with the vertical reference line, the picked crop is immediately led upwards and thus leaves the ground area very quickly, which further feed contamination is avoided. In addition, the concave, pointing in the direction of rotation of the spring tines contact surface of the arcuate contour of the elongated spring rod elements provides a reliable guidance of the crop during rotation of the tedder, so that thereby a high slipping of the crop is safely avoided up to the area of the attachment portion of the tines. The risk of contamination of the tedder, in particular by clamping of individual Ernteguthalmen or Erntegutbündeln in the field of attachment sections of the tines on the tedder is thus significantly reduced.

Im Hinblick auf eine vorteilhafte konstruktive Ausbildung der Erfindung weisen die länglichen Federstangenelemente eine Gestaltung auf, bei der die bogenförmige Kontur mit der vertikalen Bezugslinie durch den Mittelpunkt der Querschnittsfläche eines Zinkenarmes in seinem dem Erdboden zugewandten Konturabschnitt einen Winkel α einschließt, der sich in einem Bereich von 3° bis 45° bewegen kann und vorzugsweise einen Wert von 10° bis 30° annimmt. Ein entsprechender Winkel β in dem, dem Befestigungsabschnitt der Federzinken zugewandten Konturabschnitt liegt vorzugsweise in einem Bereich oberhalb von 90° und bewegt sich vorzugsweise zwischen 135° und 170°. In einer vorteilhaften Ausführungsform ist sowohl der dem Erdboden zugewandte Konturabschnitt als auch der dem Befestigungsabschnitt der Federzinken zugewandte Konturabschnitt als geradlinig geformtes, geometrisches Element ausgebildet, während der diese beiden Konturabschnitte verbindende dritte Konturabschnitt als ein geometrisches Bogenelement mit radiusförmiger Krümmung ausgebildet ist. Diese Ausführungsform erfordert in der Herstellung lediglich einen geringen konstruktiven Aufwand und stellt damit eine kostengünstige Herstellung der erfindungsgemäßen Heuwerbungsmaschine sicher. In einer weiteren denkbaren Ausführungsform der Erfindung ist es dagegen auch vorstellbar, die bogenförmige Kontur der länglichen Federstangenelemente aus einem geometrischen Konturabschnitt herzustellen, dessen Krümmung lediglich aus einem einzigen Radius besteht.With regard to an advantageous structural embodiment of the invention, the elongated spring rod elements have a design in which the arcuate contour with the vertical reference line through the center of the cross-sectional area of a tine arm in its contour portion facing the ground includes an angle α, which is in a range of 3 ° to 45 ° and preferably assumes a value of 10 ° to 30 °. A corresponding angle β in the contour section facing the fastening section of the spring prongs preferably lies in a region above 90 ° and preferably moves between 135 ° and 170 °. In an advantageous embodiment, both the contour section facing the ground and the contour section facing the fastening section of the spring tines are formed as a linearly shaped, geometric element, while the third contour section connecting these two contour sections is formed as a geometric curved element with a radius-shaped curvature. This embodiment requires in manufacture only a small design effort and thus ensures a cost-effective production of haymaking machine according to the invention. In a further conceivable embodiment of the invention, however, it is also conceivable to produce the arcuate contour of the elongated spring rod elements of a geometric contour portion whose curvature consists only of a single radius.

In Weiterbildung der Erfindung ist es auch denkbar, dass die länglichen Federstangenelemente in Verbindung mit der in Umlaufrichtung der Federzinken gerichteten, bogenförmigen Kontur auch eine bezüglich der Umlaufrichtung der Federzinken radial nach außen gerichtete Ausformung aufweisen. Diese radial nach außen gerichtete Ausformung überlagert dabei die in Umlaufrichtung der Federzinken gerichtete, bogenförmige Kontur. Aus dieser Weiterbildung ergibt sich, dass beim Zett- oder Wendevorgang der Heuwerbungsmaschine an der Vorderseite des Zettkreisels aufgenommenes Erntegut an der Hinterseite des Zettkreisels leichter wieder abgegeben werden kann. Bekanntermaßen rotieren die Zettkreisel beim Zett- oder Wendevorgang mit relativ hoher Drehzahl. Daraus lassen sich relativ kurze Zeitabschnitte sowohl für die Aufnahme des Erntegutes an der Vorderseite des Zettkreisels als auch für die anschließende Abgabe an der Hinterseite des Zettkreisels ableiten, so dass mit jeder Erleichterung oder Verbesserung des Aufnahme- oder Abgabevorganges eine Verbesserung des Arbeitsergebnisses der Heuwerbungsmaschine einhergeht.In a further development of the invention, it is also conceivable that the elongated spring rod elements in conjunction with the directed in the direction of rotation of the spring tines, arcuate contour also have a respect to the direction of rotation of the spring tines radially outward shaping. This radially outwardly directed formation superimposed on the directed in the direction of rotation of the spring tines, arcuate contour. From this development it follows that during the tedding or turning process of the haymaking machine picked up on the front of the tedder crop at the rear of the tedder can be returned easily. As is known, the tedder rotates during the tedding or turning process with a relatively high Rotation speed. From this it is possible to derive relatively short periods of time both for the reception of the crop at the front of the tedder and for the subsequent delivery at the rear of the tedder, so that with each relief or improvement of the recording or dispensing an improvement in the work of the haymaking machine is accompanied.

Nachfolgend wird ein vorteilhaftes Ausführungsbeispiel der Erfindung anhand einer Zeichnung beschrieben. In der Zeichnung zeigt:

Fig. 1:
eine perspektivische Ansicht einer Heuwerbungsmaschine nach der Erfindung, bei der jedoch die in Fahrtrichtung linke Maschinenseite nur abgebrochen dargestellt ist;
Fig. 2:
eine perspektivische Ansicht eines Zettkreisels der Heuwerbungsmaschine nach Fig. 1, bei der jedoch aus Gründen einer verbesserten Übersichtlichkeit eine Antriebsanordnung mit Stützrad für den Zettkreisel nicht dargestellt ist;
Fig. 3:
einen abgebrochen dargestellten Zinkenarm eines Zettkreisels nach Fig. 2 in einer vertikalen Projektionsebene in einer radial auf den Zettkreisel gerichteten Blickrichtung;
Fig. 4:
einen abgebrochen dargestellten Zinkenarm eines Zettkreisel nach Fig. 2 in einer entgegengesetzt zur Umlaufrichtung U gerichteten Blickrichtung;
Hereinafter, an advantageous embodiment of the invention will be described with reference to a drawing. In the drawing shows:
Fig. 1:
a perspective view of a haymaking machine according to the invention, in which, however, in the direction of travel left side of the machine is shown only broken off;
Fig. 2:
a perspective view of a tedder of the haymaking machine after Fig. 1 in which, however, for reasons of improved clarity, a drive arrangement with support wheel for the tedder is not shown;
3:
a tine arm of a tent gyro broken off Fig. 2 in a vertical projection plane in a radially directed towards the tenting gyro direction of view;
4:
a tine arm of a tent gyro broken off Fig. 2 in a direction opposite to the direction of rotation U directed viewing direction;

In der Fig. 1 ist eine, an eine Dreipunkthubeinrichtung eines landwirtschaftlichen Traktors oder dgl. Zug-und Antriebsmaschine anbringbare Heuwerbungsmaschine 1 zum Zetten und Wenden von landwirtschaftlichem Halm- oder Blattgut näher veranschaulicht, bei der an einem in einer Arbeits- und Betriebsstellung quer zur Fahrt- und Arbeitsrichtung F ausgerichteten Maschinenbalken 2 paarweise zusammenarbeitende Zettkreisel 3 angeordnet sind. In der Arbeits- und Betriebsstellung der Heuwerbungsmaschine sind die Zettkreisel 3 dabei so ausgerichtet, dass sie um eine, unter einem vorbestimmten Winkel zur Vertikalen geneigten Achse umlaufend angetrieben werden können und mit Hilfe von Federzinken 4, die sich von den Zettkreiseln 3 zum Erdboden hin erstrecken, das Erntegut an der Vorderseite des mit einer Mehrzahl von Zettkreiseln 3 versehenen Maschinenbalkens 2 vom Erdboden aufnehmen und an der Hinterseite wieder auf dem Erdboden ablegen. Zur Abstützung gegenüber dem Erdboden ist unterhalb eines jeden Zettkreisels 3 ein Lauf- und Stützrad 5 angebracht. Die Erfindung ist jedoch keineswegs auf eine Heuwerbungsmaschine im Dreipunktanbau beschränkt. Ebenso kann der Erfindung auch eine gezogene Heuwerbungsmaschine zugrunde gelegt sein.In the Fig. 1 is a heuwerbungsmaschine 1 attachable to a three-point lifting device of an agricultural tractor or the like. Towing and driving machine attachable for cropping and turning of agricultural stalk or leaf material closer, in which aligned in a working and operating position transverse to the driving and working direction F. Machine beam 2 paired cooperating Zettkreisel 3 are arranged. In the working and operating position of the haymaking machine, the tedder gyros 3 are aligned so that they are driven in rotation around a, inclined at a predetermined angle to the vertical axis can and with the help of spring tines 4, which extend from the tenting gyros 3 to the ground, pick up the crop on the front of the provided with a plurality of teddles 3 machine beam 2 from the ground and put on the back again on the ground. To support against the ground, a running and support wheel 5 is mounted below each Zettkreisels 3. However, the invention is by no means limited to a haymaking machine in three-point hitching. Likewise, the invention may also be based on a drawn haymaking machine.

Aus Fig. 2 geht ein Zettkreisel 3 hervor, der mit zumindest in etwa radial ausgerichteten und nach außen sich über den äußeren Rand des Zettkreisels hinaus erstreckenden Zinkenarmen 6 versehen ist. An den äußeren Enden der Zinkenarme 6 sind diese mit Federzinken 4 versehen, die sich für den Zett- und Wendevorgang bis nahe an den Erdboden heran erstrecken. In dieser Darstellung ist der Zettkreisel 3 in der Arbeits- und Betriebsstellung gezeigt, in der dieser um eine, unter einem vorbestimmten Winkel zur Vertikalen geneigten Achse in Umlaufrichtung U umlaufend angetrieben den Zett- und Wendevorgang durchführt. Wie aus dieser Darstellung ebenfalls hervorgeht, bestehen die Federzinken 4 aus einem Befestigungsabschnitt 7 und einem Bearbeitungsabschnitt 8 zur Bearbeitung des landwirtschaftlichen Erntegutes. Als Befestigungsabschnitt 7 enthält das dargestellte Ausführungsbeispiel zwei schraubenfederförmige Windungsteile 9, zwischen denen eine Befestigungsschraube 10 zur Befestigung der Federzinken 4 an den äußeren Enden der Zinkenarme 6 eines jeden Zettkreisels 3 angeordnet ist. Gemäß einem zusätzlichen vorteilhaften Aspekt kann die Befestigung der Federzinken 4 an den Zinkenarmen 6 derart verstellbar ausgeführt sein, dass die Federzinken 4 im Hinblick auf ihre Ausrichtung zum Erdboden einstellbar sind. Im dargestellten Ausführungsbeispiel bedeutet das, dass die Federzinken 4 an den Enden der Zinkenarme 6 um diese rotierend verstell- bzw. einstellbar sind.Out Fig. 2 goes out a tedder 3, which is provided with at least approximately radially aligned and outwardly extending beyond the outer edge of the tedder out tine arms 6. At the outer ends of the tine arms 6, these are provided with spring tines 4, which extend for the tedding and turning process close to the ground zoom. In this illustration, the tenting gyroscope 3 is shown in the working and operating position, in which it carries out the tedding and turning operation in a circulating manner about an axis inclined at a predetermined angle to the vertical in the direction of circulation U. As is also apparent from this illustration, the spring tines 4 consist of a mounting portion 7 and a processing section 8 for processing the agricultural crop. As a fastening portion 7, the illustrated embodiment includes two helical spring-shaped winding parts 9, between which a fastening screw 10 for fixing the spring tines 4 at the outer ends of the tine arms 6 of each tedder 3 is arranged. According to an additional advantageous aspect, the attachment of the spring tines 4 on the tine arms 6 can be made adjustable so that the spring tines 4 are adjustable with respect to their orientation to the ground. In the illustrated embodiment, this means that the spring tines 4 at the ends of the tine arms 6 are adjustable in rotation or adjustable by these.

Aus der Fig. 2 geht weiterhin hervor, dass der Bearbeitungsabschnitt 8 der Federzinken 4 aus zwei, in radialer Richtung beabstandeten, länglichen Federstangenelementen 11 mit zumindest annähernd gleicher Formgebung gebildet sind. In Umlaufrichtung U weisen diese länglichen Federstangenelemente 11 eine bogenförmige Kontur 12 auf, die eine konkav ausgebildete und in Umlaufrichtung U der Federzinken 4 zeigende Kontaktfläche für das Erntegut enthält. Die beiden länglichen Federstangenelemente 11 mit ihrer bogenförmigen Kontur 12 bilden damit eine optimale Führung für das vom Erdboden aufgenommene Erntegut, da dieses unmittelbar nach der Aufnahme vom Erdboden bis in die konkav ausgeformte, bogenförmige Kontur 12 der länglichen Federstangenelemente rutscht und dort solange verharrt, bis das Erntegut nach dem Zett- oder Wendevorgang an der Hinterseite der Zettkreisel wieder auf den Erdboden abgegeben wird. Hierdurch wird eine Verschmutzung insbesondere der schraubenfederförmigen Windungsteile 9 der Federzinken 4 durch einzelne Halme wirkungsvoll vermieden.From the Fig. 2 goes on show that the processing section 8 of the spring tines 4 of two, spaced apart in the radial direction, elongated spring rod elements 11 are formed with at least approximately the same shape. In the circumferential direction U, these elongated spring rod elements 11 have an arcuate contour 12, which contains a concave contact surface for the crop that is concave and points in the direction of rotation U of the spring prongs 4. The two elongated spring rod elements 11 with their arcuate contour 12 thus form an optimal guide for the picked up from the ground crop, as this slips immediately after recording from the ground to the concave, arcuate contour 12 of the elongated spring rod elements and remains there until the Crop is returned to the ground after the tedding or turning process at the rear of the tedder. As a result, contamination of the helical spring-shaped winding parts 9 of the spring tines 4 is effectively avoided by individual stalks.

Die detaillierte Gestaltung der länglichen Federstangenelemente 11 mit der bogenförmigen Kontur 12 geht insbesondere aus der Fig. 3 hervor, in der der Federzinken 4 in einer vertikalen Projektionsebene mit einer radial auf den in Umlaufrichtung U umlaufend angetriebenen Federzinken 4 gezeigt ist. Aus dieser Darstellung wird deutlich, dass ein dem Erdboden zugewandtes Ende der länglichen Federstangenelemente 12 dabei auf eine Schnittpunkt 13 ausläuft oder diesem in Umlaufrichtung U nachgeordnet ist. Dieser Schnittpunkt 13 ergibt sich aus einer, durch einen Mittelpunkt 14 einer Querschnittsfläche 15 des Zinkenarmes 6 führenden vertikalen Bezugslinie 16 mit einer das Niveau des Erdbodens darstellenden horizontalen Bezugslinie 17. Damit ist das dem Erdboden zugewandte Ende der länglichen Federstangenelemente 12 unabhängig von der jeweiligen Beanspruchung durch das vom Erdboden aufzunehmende Erntegut so ausgerichtet, dass der Abstand zwischen dem Erdboden und dem, dem Erdboden zugewandten Ende der länglichen Federstangenelemente unter Beanspruchung nicht kleiner werden kann. Ein Einstechen der Federzinken 4 in den Erdboden ist damit wirkungsvoll vermieden.The detailed design of the elongated spring rod elements 11 with the arcuate contour 12 is in particular from the Fig. 3 in which the spring tines 4 is shown in a vertical projection plane with a radially on the circumferentially U driven spring tines 4. It is clear from this illustration that an end of the elongated spring rod elements 12 facing the ground terminates at an intersection point 13 or is arranged downstream of it in the circumferential direction U. This intersection 13 results from a, through a center 14 of a cross-sectional surface 15 of the tine arm 6 leading vertical reference line 16 with a level of the ground representing horizontal reference line 17. Thus, the ground-facing end of the elongated spring rod elements 12 regardless of the respective stress through the crop to be picked up from the ground is oriented so that the distance between the ground and the end of the elongated spring bar elements facing the ground can not be reduced under stress. A piercing of the spring tines 4 in the ground is thus effectively avoided.

In einer vorteilhaften Ausführungsform der Erfindung kann die bogenförmige Kontur 12, wie dies ebenfalls aus Fig. 3 deutlich wird, aus mehreren Konturabschnitten 18,19,20, bezogen auf die in Umlaufrichtung U zeigende, konkave Kontaktfläche bestehen. Diese Konturabschnitte 18,19,20 können dabei auf eine unterschiedliche geometrische Formgebung zurückgehen, so dass sich nach entsprechender Kombination eine Vielzahl an Gestaltungsmöglichkeiten der bogenförmigen Kontur 12 anbieten. Aus Fig. 3 wird ersichtlich, dass der Konturabschnitt 18 der länglichen Federstangenelemente 11 an dem, dem Erdboden zugewandten Ende mit der vertikalen Bezugslinie 16 einen Winkel α einschließen, der Werte zwischen 3° und 45° annehmen kann. Vorteilhaft bewegt sich der Winkel α zwischen 10° und 30°. In entsprechender Weise ist zwischen dem Konturabschnitt 19 der länglichen Federstangenelemente 11 und der vertikalen Bezugslinie 16 ein Winkel β ausgebildet, dessen Wert in einem Bereich oberhalb von 90° liegt. Vorteilhaft wird hier ein Wert von 135° bis 170° angestrebt. Die hier vorzugsweise als geradlinig gestaltete Konturabschnitte 18, 19 werden über einen weiteren Konturabschnitt 20 miteinander verbunden, der hier als geometrisches Bogenelement mit radiusförmiger Krümmung geformt ist, wobei der Radius in einem Bereich von 100 mm bis 400 mm liegen kann.In an advantageous embodiment of the invention, the arcuate contour 12, as well as Fig. 3 becomes clear, consist of several contour sections 18,19,20, based on the pointing in the direction of rotation U, concave contact surface. These contour sections 18, 19, 20 can be based on a different geometrical shape, so that, after appropriate combination, a large number of design possibilities of the arcuate contour 12 are offered. Out Fig. 3 It can be seen that the contour portion 18 of the elongate spring rod members 11 at the end facing the ground with the vertical reference line 16 form an angle α, which can assume values between 3 ° and 45 °. Advantageously, the angle α moves between 10 ° and 30 °. Similarly, between the contour portion 19 of the elongated spring rod members 11 and the vertical reference line 16, an angle β is formed whose value is in a range above 90 °. Advantageously, a value of 135 ° to 170 ° is sought here. The here preferably designed as a straight contour sections 18, 19 are connected to each other via a further contour portion 20, which is here formed as a geometric arc element with radius-shaped curvature, wherein the radius can be in a range of 100 mm to 400 mm.

Eine Weiterbildung der Erfindung geht aus der Darstellung nach Fig. 4 hervor, wobei die länglichen Federstangenelemente 11 in Verbindung mit der in Umlaufrichtung der Federzinken 4 gerichteten, bogenförmigen Kontur 12 auch eine bezüglich der Umlaufrichtung U der Federzinken 4 radial nach außen gerichtete Ausformung aufweisen. Diese radial nach außen gerichtete Ausformung überlagert dabei die in Umlaufrichtung U der Federzinken 4 gerichtete, bogenförmige Kontur 12. Aus dieser Weiterbildung ergibt sich, dass beim Zett- oder Wendevorgang der Heuwerbungsmaschine an der Vorderseite des Zettkreisels 3 aufgenommenes Erntegut an der Hinterseite des Zettkreisels 3 leichter wieder abgegeben werden kann. Nach der Darstellung in Fig. 4 kann sich diese radial nach außen gerichtete Ausformung der länglichen Federstangenelemente 11 aus einem oder mehreren Konturabschnitten 21,22 zusammensetzen. Das Ausführungsbeispiel in Fig. 4 zeigt, dass ein dem Erdboden zugewandter Konturabschnitt 21 als geometrisches Bogenelement mit radiusförmiger Krümmung geformt ist, während der dem Zinkenarm 6 zugewandte Konturabschnitt 22 geradlinig gestaltet ist.A development of the invention is based on the representation Fig. 4 show, wherein the elongated spring rod elements 11 in conjunction with the directed in the direction of rotation of the spring tines 4, arcuate contour 12 also have a respect to the direction of rotation U of the spring tines 4 radially outwardly directed formation. This radially outwardly directed formation is superimposed by the arcuate contour 12 directed in the direction of rotation U of the spring tines 4. From this development it follows that crop material picked up at the front of the tedder gyro 3 at the rear of the tedder gyro 3 is easier during the tedding or turning process of the haymaking machine can be returned. After the presentation in Fig. 4 can this radially outward shaping of the elongated spring rod elements 11 composed of one or more contour sections 21,22. The embodiment in Fig. 4 shows that a contour section 21 facing the ground is shaped as a geometric arch element with a radius-shaped curvature, while the contour section 22 facing the tine arm 6 is rectilinear.

Claims (9)

  1. Haymaking machine for tedding and turning agricultural stalky or leaf crops, comprising at least two rotary tedders (3) which are arranged on a machine beam (2) that is oriented substantially perpendicularly to the travelling and working direction (F) when in the working and operating position, which rotary tedders are rotated about an axis that is inclined towards the vertical at a predefined angle in the travelling and working direction (F), and are provided with a plurality of tine arms (6) that are oriented at least approximately radially, the outer ends of the tine arms (6) being fitted with spring teeth (4), and each spring tooth (4) consisting of a resiliently yielding fastening portion (7) that is spatially associated with the outer end of the tine arms (6), and a processing portion (8) for processing the agricultural stalky or leaf crops that comprises two elongate spring rod elements (11) which extend towards the ground in the working and operating position of the rotary tedders (3), the two elongate spring rod elements (11) having an arc-shaped contour (12) having at least approximately identical shaping in a view of the spring teeth (4) in which the spring teeth (4) are shown in a vertical projection plane in a viewing direction oriented radially towards the rotary tedder (3), an end of the elongate spring rod element (11) which faces the ground coinciding with or following, in relation to the direction of rotation (U) of the spring teeth (4), an intersection point (13) between a vertical grid line (16), which grid line (16) passes through a centre (14) of the cross-sectional area (15) of the tine arm (6) and the ground, and the arc-shaped contour (12) of the elongate spring rod elements (11) consisting of two geometrically formed contour portions (21, 22) in the radial orientation of the rotating spring teeth (4), characterised in that the contour portion (21) which faces the ground is designed as an arc element having a radius-like curvature and the contour portion (22) which faces the resiliently yielding fastening portion (7) of the tine arm (4) is designed as a linear element.
  2. Haymaking machine according to claim 1, characterised in that the arc-shaped contour (12) of the elongate spring rod elements (11) has a concave contact surface for contact with the agricultural crops, which surface faces in the direction of rotation (U) of the spring teeth (4).
  3. Haymaking machine according to claim 1 and claim 2, characterised in that the arc-shaped contour (12) of the elongate spring rod elements (11) is formed by at least one geometrically designed contour portion (16, 19, 20) in relation to the direction of rotation (U) of the spring teeth (4).
  4. Haymaking machine according to any of claims 1 to 3, characterised in that, in a contour portion (18) which faces the ground, the arc-shaped contour (12) of the elongate spring rod elements (11) and the vertical grid line (16) form an angle (α) in the range of between 3° and 45°.
  5. Haymaking machine according to any of claims 1 to 3, characterised in that, in a contour portion (19) which faces the resiliently yielding fastening portion (7) of the spring tooth (4), the arc-shaped contour (12) of the elongate spring rod elements (11) and the vertical grid line (16) form an angle (β) in the range of over 90°.
  6. Haymaking machine according to claim 1 and claim 2, characterised in that the arc-shaped contour (12) is formed by a geometrically designed contour portion, the curvature of which results from a single radius.
  7. Haymaking machine according to any of claims 1 to 5, characterised in that the arc-shaped contour (12) consists of three geometrically designed contour portions (18, 19, 20), the contour portion (18) facing the ground and the contour portion (19) facing the resiliently yielding fastening portion (7) of the spring teeth (4) being designed as linear elements and the third contour portion (20), which connects said two contour portions (18, 19), being designed as a curved element having a radius-like curvature.
  8. Haymaking machine according to any of claims 1 to 7, characterised in that the resiliently yielding fastening element (7) of the spring tooth (4) contains helical spring-like winding members (9) for fastening the spring tooth (4) to the tine arms (6) of the rotary tedder (3).
  9. Haymaking machine according to claim 8, characterised in that the helical spring-like winding members (9) for fastening the spring tooth (4) to the tine arms (6) of the rotary tedder (3) can be connected to the tine arms (6) so as to be adjustable about an axis extending in the longitudinal direction of the tine arms (6).
EP16000889.2A 2015-04-28 2016-04-20 Haymaking machine Active EP3087822B1 (en)

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SI (1) SI3087822T1 (en)

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Also Published As

Publication number Publication date
DE102015005347B4 (en) 2017-03-02
PL3087822T3 (en) 2018-10-31
DE102015005347A1 (en) 2016-11-03
EP3087822A1 (en) 2016-11-02
SI3087822T1 (en) 2018-06-29

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